You were hoping he had some answers regarding the cause of these deaths but unfortunately you didn't get them... It could be all these things mentioned above. Just stay away from that park for a while, somebody could be intentionally poisoning dogs there.

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Is your human Board of Health aware of what's going on? Something killing dogs could kill people, especially children. No people or kids sick? Even if there aren't I would expect concern for human health.

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The rapid downhill course, and the common link of kidney failure makes me think of propylene glycol (a prominent ingredient in antifreeze.) It is in other products as well. It is sweet to dogs. In fact it's used as a coyote poison. It doesn't take a lot of it to kill a dog. If it's poured out on some grass and the dogs lick it up, that would be all it would take.

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Is your human Board of Health aware of what's going on? Something killing dogs could kill people, especially children. No people or kids sick? Even if there aren't I would expect concern for human health.

The park contacted the Dept. of Agriculture, asking about the potential for products to be the cause....the official response was that a dog would have to eat "a yard full" of grass in order to start showing symptoms.

Originally Posted by Annette47

I hate to say it, but intentional poisoning did come to mind.

Yeah...I sure haven't ruled that out.

I did ask on the forum just now if anyone knew what the dogs had been eating...in case it really is food-related. Longshot but, as we all know, not farfetched.

So is renal failure a common denominator? If so... you can bring that to your vet and ask him/her about the likelihood that a series of neighborhood dogs of different ages are dying of the same cause. Presumably, when someone's dog is getting profoundly ill, the owners will take it to the vet. Renal disease is easily diagnosed based upon serum creatinine which is nuts and bolts lab work. If these dogs made it to a vet prior to dying, there ought to be a trail of lab work that could be investigated.